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https://hdl.handle.net/1822/5793
Título: | The influence of cycloplegic in objective refraction |
Autor(es): | Jorge, Jorge Queirós, A. González-Méijome, José Manuel Fernandes, Paulo Rodrigues Almeida, José B. Parafita, Manuel A. |
Palavras-chave: | Astigmatism Autorefractor Retinoscopy Refractive errors Cycloplegic Non-cycloplegic refraction cycloplegic and non-cycloplegic refraction |
Data: | Jul-2005 |
Editora: | Blackwell Publishing |
Revista: | Ophthalmic and physiological optics |
Citação: | "Ophthalmic and physiological optics". ISSN 1040-5488. 25:4 (July 2005) 340-345. |
Resumo(s): | The purpose of this study was to compare refractions measured with an autorefractor and retinoscopy in cycloplegic and non-cycloplegic eyes. The objective refractions were performed in 199 right eyes from 199 healthy young adults with a mean age of 21.6 ±2.66 years. The measurements were performed first without cycloplegia and repeated 30 minutes later with cycloplegia. Data were analyzed using Fourier decomposition of the power profile. More negative values of component M and J0 were give by non-cycloplegic autorefraction compared to cycloplegic autorefraction (p<0.001). However more positive values were given by non-cycloplegic autorefraciton regarding to the J45 vector, althought this differences were not statistically significant (p=0.233). Regarding retinoscopy, more negative values of component M where obtained with non-cycloplegic retinoscopy (p<0.001); for the cylindrical vectors J0 and J45 the retinoscopy without cycloplegic yields more negative values (p= 0.234; p= 0.112, respectively). Accepting that differences between cycloplegic and non-cycloplegic retinoscopy are only due to accommodative response, present results confirm that when performed by an experienced clinician, retinoscopy is a more reliable method to obtain objective start point for refraction under non-cycloplegic conditions. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/5793 |
DOI: | 10.1111/j.1475-1313.2005.00277.x |
ISSN: | 1040-5488 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CDF - OCV - Artigos/Papers (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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The influence of cycloplegic in objective refraction.pdf | article | 102,46 kB | Adobe PDF | Ver/Abrir |